US2556896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous enamel slip compositions and method of preparing
Assignee: EIDP Inc
•
Filing: 1950-07-28
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Granted: 1951-06-12
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Expires: 1970-07-28
Abstract
No abstract record available.
Inventors
- 👤 William R Beatty
- 👤 Oliver A Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:51
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/102; C03C3/062; C03C3/07; C03C8/00; C03C8/02; C03C8/10; C03C8/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A VITREOUS ENAMEL COMPOSITION COMPRISING A WATER SLIP OF AN ENAMEL FRIT FROM THE GROUP CONSISTING OF LEAD SILICATE, LEAD BOROSILICATE, LEAD ALKALI METAL SILICATE AND LEAD ALKALI METAL BOROSILICATE ENAMEL FRITS, SAID SLIP CONTAINING AN ACID FROM THE GROUP CONSISTING OF ORTHOPHOSPHORIC ACID, METAPHOSPHORIC ACID AND PYROPHOSPHORIC ACID, IN AN AMOUNT SUFFICIENT TO IMPART A SUBSTANTIAL DEGREE OF SET TO SAID SLIP BUT INSUFFICIENT TO CAUSE OBJECTIONABLE THINNING THEREOF.
Claim 2
Dependent Claim
70 words
A VITREOUS ENAMEL COMPOSITION COMPRISING A WATER SLIP OF AN ENAMEL FRIT FROM THE GROUP CONSISTING OF LEAD SILICATE, LEAD BOROSILICATE, LEAD ALKALI METAL SILICATE AND LEAD ALKALI METAL BOROSILICATE ENAMEL FRITS, SAID SLIP CONTAINING AN ACID FROM THE GROUP CONSISTING OF ORTHOPHOSPHORIC ACID, METAPHOSPHORIC ACID AND PYROPHOSPHORIC ACID, IN AN AMOUNT SUFFICIENT TO IMPART A SUBSTANTIAL DEGREE OF SET TO SAID SLIP BUT INSUFFICIENT TO CAUSE OBJECTIONABLE THINNING THEREOF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |